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https://issues.apache.org/jira/browse/SPARK-8312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582551#comment-14582551
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Apache Spark commented on SPARK-8312:
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User 'navis' has created a pull request for this issue:
https://github.com/apache/spark/pull/6767
> Populate statistics info of hive tables if it's needed to be
> ------------------------------------------------------------
>
> Key: SPARK-8312
> URL: https://issues.apache.org/jira/browse/SPARK-8312
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Navis
> Priority: Minor
>
> Currently, spark-sql uses stats in metastore for estimating size of hive
> table, which means analyze command should be executed before accessing the
> table for better planning especially for joins. But still with the stats, it
> cannot reflect real input size of the query when partition prunning predicate
> exists in it.
> Even worse is that hive cannot update metastore stats for external tables,
> which is fixed recently in HIVE-6727. The issue detail says the bug is
> applied to all hive version between 0.13.0 and 1.2.0
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